can gloss
Regular verb: gloss - glossed- glossed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can gloss
you can gloss
she can gloss
we can gloss
you can gloss
they can gloss 	I can be glossing
you can be glossing
she can be glossing
we can be glossing
you can be glossing
they can be glossing	I can have glossed
you can have glossed
she can have glossed
we can have glossed
you can have glossed
they can have glossed	I can have been glossing
you can have been glossing
she can have been glossing
we can have been glossing
you can have been glossing
they can have been glossing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't gloss
you can't gloss
she can't gloss
we can't gloss
you can't gloss
they can't gloss 	I can't be glossing
you can't be glossing
she can't be glossing
we can't be glossing
you can't be glossing
they can't be glossing	I can't have glossed
you can't have glossed
she can't have glossed
we can't have glossed
you can't have glossed
they can't have glossed	I can't have been glossing
you can't have been glossing
she can't have been glossing
we can't have been glossing
you can't have been glossing
they can't have been glossing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I gloss?
can you gloss?
can she gloss?
can we gloss?
can you gloss?
can they gloss? 	can I be glossing?
can you be glossing?
can she be glossing?
can we be glossing?
can you be glossing?
can they be glossing? 	can I have glossed?
can you have glossed?
can she have glossed?
can we have glossed?
can you have glossed?
can they have glossed? 	can I have been glossing?
can you have been glossing?
can she have been glossing?
can we have been glossing?
can you have been glossing?
can they have been glossing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I gloss?
can't you gloss?
can't she gloss?
can't we gloss?
can't you gloss?
can't they gloss? 	can't I be glossing?
can't you be glossing?
can't she be glossing?
can't we be glossing?
can't you be glossing?
can't they be glossing? 	can't I have glossed?
can't you have glossed?
can't she have glossed?
can't we have glossed?
can't you have glossed?
can't they have glossed? 	can't I have been glossing?
can't you have been glossing?
can't she have been glossing?
can't we have been glossing?
can't you have been glossing?
can't they have been glossing?